www.comcastfiber.net - robtex.com
www.comcastfiber.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::6815:3be5Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3031::ac43:b8d4Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.59.229Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.184.212Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.59.229, 172.67.184.212 | ||||||
| IPv6 hints | 2606:4700:3031::6815:3be5, 2606:4700:3031::ac43:b8d4 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=222, name=cloudflare-ech.com | ||||||
comcastfiber.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::6815:3be5Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3031::ac43:b8d4Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.59.229Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.184.212Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | alberto.ns.cloudflare.com ⭐ | ||||||
| NS | zariyah.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.59.229, 172.67.184.212 | ||||||
| IPv6 hints | 2606:4700:3031::6815:3be5, 2606:4700:3031::ac43:b8d4 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=222, name=cloudflare-ech.com | ||||||
| SOA | alberto.ns.cloudflare.comdns@cloudflare.com serial=2408995131 | ||||||
DNS History
6 records (4 active, 2 former)
●A104.21.59.2292026-05-28 → 2026-07-24 · 2 obs
● 2026-05-28 14:37:36
● 2026-07-24 05:42:54
● 2026-07-24 05:42:54
●A172.67.184.2122026-05-28 → 2026-07-24 · 2 obs
● 2026-05-28 14:37:36
● 2026-07-24 05:42:54
● 2026-07-24 05:42:54
●A2606:4700:3031::6815:3be52026-06-24 → 2026-07-24 · 3 obs
○ 2026-06-08 15:12:52
● 2026-06-24 14:04:02
● 2026-07-24 05:42:54
● 2026-06-24 14:04:02
● 2026-07-24 05:42:54
●A2606:4700:3031::ac43:b8d42026-06-24 → 2026-07-24 · 3 obs
○ 2026-06-08 15:12:52
● 2026-06-24 14:04:02
● 2026-07-24 05:42:54
● 2026-06-24 14:04:02
● 2026-07-24 05:42:54
○A2606:4700:3036::ac43:b8d42026-05-28 → 2026-06-08 · 4 obs
● 2026-05-28 14:37:36
● 2026-06-08 15:12:52
○ 2026-06-24 14:04:02
○ 2026-07-24 05:42:54
● 2026-06-08 15:12:52
○ 2026-06-24 14:04:02
○ 2026-07-24 05:42:54
○A2606:4700:3037::6815:3be52026-05-28 → 2026-06-08 · 4 obs
● 2026-05-28 14:37:36
● 2026-06-08 15:12:52
○ 2026-06-24 14:04:02
○ 2026-07-24 05:42:54
● 2026-06-08 15:12:52
○ 2026-06-24 14:04:02
○ 2026-07-24 05:42:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| comcastfiber.net | zariyah.ns.cloudflare.com, alberto.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.195.18
NS records: zariyah.ns.cloudflare.com, alberto.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for comcastfiber.net (unsigned zone)
⏱️ Timing
Total: 1249ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.59.229, 172.67.184.212 |
| AAAA | 2 | 2606:4700:3031::ac43:b8d4, 2606:4700:3031::6815:3be5 |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
Analysis
IP Addresses
www.comcastfiber.net directs to four IP numbers, which are 104.21.59.229, 172.67.184.212, 2606:4700:3031::6815:3be5 and 2606:4700:3031::ac43:b8d4.